Home / 20,316.81-28,037.34-11,364.69

Finding the Fourth Proportional to 20,316.81, 28,037.34 and 11,364.69

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Solution

The fourth proportional to 20,316.81, 28,037.34 and 11,364.69 is: 15,683.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,316.81 : 28,037.34 = 11,364.69 : x
  2. Step 2: Convert to fraction form
    20,316.81/28,037.34 = 11,364.69/x
  3. Step 3: Cross multiply
    20,316.81x = 28,037.34 × 11,364.69
  4. Step 4: Simplify right side
    20,316.81x = 318,635,677.52
  5. Step 5: Solve for x
    x = 318,635,677.52/20,316.81
  6. Step 6: Final answer
    x = 15,683.35

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Half scale
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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.